Maybe she liked prison so much she wanted to go back. Lindsay Lohan failed a court-ordered drug and alcohol test, and announced the news to the world via Twitter. "Substance abuse is a disease, which unfortunately doesn't go away over night. I am working hard to overcome it,” she tweeted. TMZ says she failed two tests, one of which was for cocaine. The troubled star said if asked, she’s prepared to face the consequences of her relapse in court. The setback could cost her more jail time.